The search for new growing spaces

In part three of this series on land, food and the future, I want to look at some of the possibilities for expanding food production without destroying the environment.

Earlier we ruled out a bunch of land types that aren’t currently used for agriculture:

Only half of usable land is used for farming, because the rest has forests on it. We’ve already agreed that we’re not going to cut the trees down – but can we produce food within the forest?

That’s what agroforestry is all about, ...